Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for other than internal combustion engine – or...
Patent
1998-11-02
2000-08-08
Knight, Anthony
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for other than internal combustion engine, or...
277641, F16J 300
Patent
active
060989912
ABSTRACT:
A diaphragm stopper construction for a high-pressure accumulator 100 is provided which causes no damage when the diaphragm 86 deforms even if the fuel is contaminated by foreign matter and the foreign matter is caught in the slight gap 94 between the diaphragm 86 and the plate or wall 101 and deforms the diaphragm 86 as in the conventional design. The diaphragm 86 is supported and sealed by the case 85 and a plate 101, and has a secured portion 104 which is not displaced even if the pressure in the high-pressure chamber 71 fluctuates. In the gentle slope 103 of the plate 101, a rectangular groove 105 is disposed which has a rectangular cross-section and which is an annular recess portion formed around the circumference of the plate 101 in close proximity to and radially inside the innermost secured edge S of the secured portion 104, such that even if the diaphragm 86 is displaced and comes into contact with the gentle slope 103 of the plate 101, foreign matter can be received. The annular recess portion may also be a terraced recess portion 125.
REFERENCES:
patent: 4253675 (1981-03-01), St. Laurent, Jr.
patent: 4936635 (1990-06-01), Sakaguchi
patent: 5142964 (1992-09-01), Suzuki
patent: 5730506 (1998-03-01), Friedow et al.
Knight Anthony
Mitsubishi Denki & Kabushiki Kaisha
Schwing Karlena D.
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